package com.concurrent.atomic;

import lombok.Getter;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;

/**
 * @author: zhouyang
 * @descrpition:
 * @time: 2019-05-04 17:10
 */
@Slf4j
public class AtomicBooleanTest {


    //请求总数
    public static int clientTotal = 5000;

    //请求并行的线程数
    public static int threadTotal = 200;
    private static AtomicBoolean isHappen = new AtomicBoolean();

    public static void main(String[] args) throws Exception {
        ExecutorService executorService = Executors.newCachedThreadPool();
        final Semaphore semaphore = new Semaphore(threadTotal);
        final CountDownLatch countDownLatch = new CountDownLatch(clientTotal);//请求总数
        for(int i=0;i<clientTotal;++i){
            executorService.execute(()->{
                try {
                    semaphore.acquire();
                    test();
                    semaphore.release();
                }catch (Exception e){

                }
                countDownLatch.countDown();
            });
        }
        countDownLatch.await();
        executorService.shutdown();
    }

    private static void test(){
        if(isHappen.compareAndSet(false,true)){
            log.info("isHappen {}",isHappen.get());
        }
    }
}
